070-516 全真模擬試験 DEMO

問題1: }
You need to ensure that the Product data for each Category object is lazy-loaded. What should you do?
A. Add the following code segment at line 06:
ctx.LoadProperty(category, "Products");
B. Add the following code segment at line 08:
ctx.LoadProperty(product, "*");
C. Add the following code segment at line 06:
var strPrdUri = string.Format("Categories({0})?$expand=Products", category.CategoryID);
var productUri = new Uri(strPrdUri, UriKind.Relative);
ctx.Execute<Product>(productUri);
D. Add the following code segment at line 08:
var strprdUri= string.format("Products?$filter=CategoryID eq {0}", category.CategoryID);
var prodcutUri = new Uri(strPrd, UriKind.Relative);
ctx.Execute<Product>(productUri);
正解: A
11.You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server database. You load records from the Customers table
into a DataSet object named dataset.
You need to retrieve the value of the City field from the first and last records in the Customers table.
Which code segment should you use?
A. DataTable dt = dataset.Tables["Customers"];
string first = dt.Rows[0]["City"].ToString();
string last = dt.Rows[dt.Rows.Count - 1]["City"].ToString();
B. DataTable dt = dataset.Tables["Customers"];
string first = dt.Rows[0]["City"].ToString();
string last = dt.Rows[dt.Rows.Count]["City"].ToString();
C. DataRelation relationFirst = dataset.Relations[0];
DataRelation relationLast = dataset.Relations[dataset.Relations.Count - 1];
string first = relationFirst.childTable.Columns["City"].ToString();
string last = relationLast.childTable.Columns["City"].ToString();
D. DataRelation relationFirst = dataset.Relations[0];
DataRelation relationLast = dataset.Relations[dataset.Relations.Count];
string first = relationFirst.childTable.Columns["City"].ToString();
string last = relationLast.childTable.Columns["City"].ToString();
正解: A